Coupling for threshing-machines



PATENTED FEB. 16, 1904.

W. J. RANDOLPH. JR. COUPLING FOR THRESHING MACHINES, a

APPLICATION FILED MAY 12, 1903.

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No. 752,300. PATENTED FEB. 16, 1904.

W. J. RANDOLPH, JR. COUPLING FOR THRESHING MACHINES, (Km.

APPLIGATION PILED MAY 12, 1903 NO MODEL 2 SHEETSSHBET 2.

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. F NEWTON, IOWA,

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- i itation his is, 12,1963.

To all whom it may concern: a

. Be it known that I, WLLLIAMl-RANDOLBH, J r., a'cit izen of the United States, residing at Newton; in *the county of Jasper and State of Iowa, have invented a new and useful Improve:

. ment in Couplings for Threshing-Machines,

&c., of which the following is a; specification.

My invention relates: to couplers, and'ises- I pecially directedtoa device of this character designed for use in connection with threshing-' machines, but which'may beemployed for coupling cars orthe like, and has for itsobjects to produce a device of this-character which will be simple of construction, efiicient in operation, one in which the coupling-jaws will automatically move into coupling engage ment, and one in'which the jaw-holding lever may he-readily manipulated for releasing the aws.

To these ends the invention comprises'the novel details of construction and combination of parts more fully hereinafter described. I

In the accompanying drawings, Figure 1 is a top sectional plan of acoupler embodying my invention in itspreferred form, thepartsf being'shown incoupled position. Fig. 2 is a. similar view showing the. parts in uncoupled position. Fig. 3 is a similar view showing an intermediate position of the parts. I Fig. 4 is. a longitudinal section. Fig. 5 is atop sec- .tional plan of a' inodified; form of the device,

the. parts being showniin coupled position. Fig. 6 is a similar view showing the parts uncoupled, the movement of the secondary jaw being shown in dotted lines. Referring to the drawings, 1 indicates the platform of a traction-engineor the like, and 2 a portion of the tender or other vehicle'which ,is coupled thereto. These parts are conventionally shown for the'purpose of illustrating the operation of the coupler whichconstitutes the essence of'myinvention. Y

In practicing myminvention I pivot to the platform or likepart 1- by means a bolt 3 the draw-head 4 of my improved coupler,- which is normally held against "swinging movement by means of a'draw-boltfi, and on the tender or like part 2 I mount a suitable member 6,

sem No. 156,339. on model.)

l carrying a pin 7, with which the jaws of my improved'coupler engage when the parts are in coupled position, as shown in Fig; 1, r I The drawrhead 40f my coupler consists of disposed in vertical alinem'ent and are spaced one from the other by front blocks 10, rear blocksllyand an intermediate side-block 12. The top and bottom plates of the draw-head areeach recessed from its outer end inward, as at 13, said recess forming a guide which terminates in a substantially circular opening 14, which in practice receives the pin 7 when the parts are in coupled position. indicatesthe primary coupling-jaw, which is mounted between the top and bottom plates of the draw-head and pivoted upon a vertical transverse pin 16. Said jaw is provided with a coupling knuckle or finger 17, which in practice extends across the guide-recess 13 in advanceof the pin-receiving opening'l to prevent escape of the pin, the end of the jaw beveled face for the finger 17. The jaw is afurther provided with a lateral inwardly-extending finger 19, which normally lies in rear of the pin-receiving opening 14-. in position as will be more fully'herein'after explained. The upper face of the jaw 15 is recessed, as at the inner edge of the jaw an inclinedstop 21, and'the jaw is further provided at its inner end with a rearwardly-extending finger 22, the purpose of all of which parts will presently which is mounted between the top and bottom plates of the draw-headand-ispivotedupon a pin 24, saidjaw being provided-with an in vwardly extending finger 25', having a front ing arranged to overlie the finger 19 and to extend within the recess 20 and have its inner end bear upon the inclined stop 21 of the primary jaw. The jaw 23 has its lower face in advance of the finger 17 being beveled or inclined, as at 18, to constitute'an outer to be acted upon by the incoming pin forthrowing the jaw 15 into its coupling position,

beveled or inclined face 26, the finger 25 bea top plate 8 and a bottom plate 9, vwhich are 20, above the finger '19, thus forming upon ar. 5 b 23 indicates thesecondary'coeperating'jaw,

when the parts are uncoupled'to prevent acci-...

dental coupling engagement of the jaws.

29 indicates a lever mounted between thetop and bottom plates ofthe draw-head tra'ns versely thereof and pivoted upon a pin 80, said lever being provided adjacent toone end}, with a notch or recess forming a shoulder 31 for engaging the finger 22' of the jaw 15 to; maintain the parts in coupled position, shown in Fig. 1. In this connectionit is be noted that when the jaw swings to coupling position the block -12 constitutes a stop with which the finger 22 contacts to check-it at proper position for engagement by. the shoulder 81 of the lever, and that when the jaw is releasedand swung outward the block 12 serves as a stop to prevent the forward end of the jaw swinging laterally beyond the head,

- 32 is a spring coiled upon the pin 30 and having a spring-arm 33, which normally holds the lever in engaging position, and with a second arm 34:, which engages the secondary jaw 23 for maintaining the same in such .po-. sition that the stop 28 will normally lie in the path of the finger 19.

35 is an operating member which extends forwardly from the lever29, and 36 is a similar member extending rearwardly from the lever. These operating members are prefer,- ably in the form of ropes, which are attached to the lever at opposite endsthereofyandya pullupon either of which-serves to. releasethe:v lever from engagement with thejaw 15 taper-:-

when the finger-122 will contact with stop 12,. I and the lever 29 will moveautcmaticallyinte, engagement. If thepartsoccupy the position 1 shown in Fig, 3, the pin 7 in passing to the f coupled position will first contact with the outer beveled face of finger 17' and swing the; jaw 15 outward to permit the pinto pass the. finger, then will next contactwith fingerlq, for swinging the jaw inward and with the hem.

eled face of finger 25 forthe purpose just earplained.

In the modification shown in 5 l a the primary jaw 15 is normally locked in coup; ling position by means of a iever 29", which or scopenf mit the latter to swing to uncoupling position;

In practice, supposing the par'tsto be in the I 1 position shown in Fig. 1, a pull upon either i 4 of the lever-operating-members releases-the "fisvinatazcq plingfinse j, in advan o the n1eri a th w lset th -r shouldered, a sf at 31", for engagement with the finger 19 of the jaw 15", the forwardly-extending portion of the lever 29 being formed in advance of the shoulder 31 into the secondary-jaw 23?, said jaw ,-being;provided with an inwardly-extending finger-'95, which cooperates with finger 17 formed upon the prii marm'jaw;*fommaintaining the pin 7 Within the opening 148*, it being noted in this connecti -v t a he er 1 has .az..f.ro t,...bev portion 18 and *fifiger 25a beveleF portion 26,:. through; the medium of which beveled portions the incoming pin automatically opens the jawsto permit its passage.behindssaidfim e .and: int he:= pin eceiring; 'openina the pmunpractice acting first cthrough -the,.1bev.- Y

releas gthe finger .19i 'froin'engagement,with

the shoulder; of ,th'e ';lever 29? andrafter passingt the fingers contacts. with? 'theifinge'r 19? 01 swingingwthej primary;.jaw inward. to coupling'pos hnande g nat eindiofthe n rawi z heasho dertt; Ihe lever 29iisiac- 1 ,Erqxngtheinrbgo jngfit wil-l'abe' scene-that I c asimpl ndcflicienttcmipler which atdmiehly dap dmyslf w the p i details herein shown and m detheri innithoutdepar ngt Havi g hus des 1.. acomn s z e; mtes'i i stl laid V pinzreceivin rnn i ertia iw i d jaw r c si g heg ids-ii:

v v lforvtheattainment f endsrln viewjgbu Ldo-not'limihor confinedes r bed;ina schsasmiuor'changes,ma ibe pup 93. 11 1 vivo cl..lev r easide d,- for en a emen 1w hthQ P D yQ i w m nt geplingi qsit o t s r-ac e ,tica n ing: n s

St mqv g the t ea and mea 2 i i ifin sii iii pive sdw edonda ya mdn re i e jaw provided with a stop, a finger associated has an integral 'ferwardlyextending pet tion with theprimary jaw and engaging said stop e. min e d.,.-- at wtnmvlded Tia a #10921 1 the primary jaw, means fer moving the lever moving'the'lever automegtigellyto engaging ,position, and a pair 9f opeyating members- I 'automatiqally t engaging position, and means for operating the. lever 13di'elesbsethejaw.

4. A -/c0upler eompyisiflg' a drew-head, a.' .1 pivoted primary "jaw, a pivoted secondary 00-" operating jaw, a pivoted levergshouIderegi foi I engagement withghe primary jaw in mainthin I the same iii coupling position,- 'a' spring for 'and'fe ither operableior actuating tlie lever to 5 feleasejthejaw: 1 I 1 I1i.testim0py:that. I'ela'im the floregoing as I my own I hiwe hereto affixed my sigpeture in I thepi eseneeof two witnesses;

- RANDOLPH, JR.)

- .iwitnesesni G. QRANDOx 03mm RARDOLPHJ 

